The Effect of Compressed Air Pressure and Stand-off Distance on the Twin Wire Arc Spray (TWAS) Coating for Pump Impeller from AISI 304 Stainless Steel

Fitriyana, Deni Fajar; Caesarendra, Wahyu; Nugroho, Sri; Haryadi, Gunawan Dwi; Herawan, M. A.; Rizal, Muhammad Saiful; Ismail, Rifky

doi:10.1007/978-981-15-2294-9_11

Cited by 9 publications

(17 citation statements)

References 23 publications

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“…Scans were performed at 2θ from 10° to 30° at a scanning speed of 2°/min using Ni-filtered CuK α radiation at 40 kV as well as 30 mA. A scanning electron microscope (SEM) (JSM-6510 Series Scanning Electron Microscope, Tokyo, Japan) was also employed to observe the materials’ morphology at a 15 kV accelerating voltage [ 35 , 36 ].…”

Section: Methodsmentioning

confidence: 99%

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

et al. 2022

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Polylactic acid (PLA) and polycaprolactone (PCL) are synthetic polymers that are extensively used in biomedical applications. However, the PLA/PCL blend produced by ball milling, followed by pressure compaction and sintering, has not been extensively explored. The goal of this research is to investigate the effect of the composition of biomaterials derived from PLA and PCL prepared by ball milling, followed by pressure compaction and sintering, on mechanical and physical properties. PCL and PLA with various concentrations were blended utilizing a ball milling machine for 2 h at an 80-rpm rotation speed. The obtained mixture was placed in a stainless steel 304 mold for the compacting process, which uses a pressure of 30 MPa to create a green body. The sintering procedure was carried out on the green body created at 150 °C for 2 h using a digital oven. The obtained PLA/PCL blend was tested using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), density, porosity, and three-point bending. Following the interaction between PCL and PLA in the PLA/PCL blend, the FTIR spectra and XRD diffractograms obtained in this work revealed a number of modifications in the functional groups and crystal phase. The 90PLA specimen had the best mechanical properties, with a maximum force and displacement of 51.13 N and 7.21 mm, respectively. The porosity of the PLA/PCL blend decreased with increasing PLA concentration so that the density and flexural properties of the PLA/PCL blend increased. The higher PCL content decreased the stiffness of the PLA molecular chain, consequently reducing its flexural properties.

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Section: Methodsmentioning

confidence: 99%

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

et al. 2022

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“…This study increased the air pressure by 50% to replicate this effect and understand any potential tradeoffs associated with higher pressure. It is also established by past research that reduction of SOD is generally linked to a denser, lower porosity coating (Ref 10 ). This study reduced the SOD from the manufacturer recommendation to attempt to reduce coating porosity.…”

Section: Methodsmentioning

confidence: 84%

“…Planche et al studied the relationship between spray parameters, coating microstructure, and coating hardness, with similar findings as Jandin et al, but with the additional finding that porosity decreases with increasing gas flow rate due to greater flattening of the spray droplets (Ref 11 ). Fitriyana et al also found that decreasing the standoff distance or compressed air pressure increased the hardness and adhesive strength for coatings of a FeCrBSiMn steel on 304 stainless steel (Ref 10 ) and attributed the improvements to the production of thinner coatings with less porosity.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, effective coating performance requires connectivity to the substrate structure through strong adhesion, and traditional methods of characterizing coatings are not always effective at assessing the capability of such structurally integrated systems (Ref 8 ). As a result, the interaction between process parameters and coating properties continues to be a subject of active research (Ref 9 , 10 ), and Smith, et al, recently concluded that a “critical aspect” of leveraging TWA, and other related methods, to achieve resource and process sustainability “is through in-depth characterization and evaluation of these non-idealized composite systems” (Ref 8 ).…”

Section: Introductionmentioning

confidence: 99%

“…Because coating properties are intrinsically dependent upon microstructure, the impact of process parameters on the microstructure of thermal spray coatings has been reported upon for a variety of material systems (Ref 1 , 10 – 12 , 20 ). A significant aspect of the prior work was to identify the mechanisms by which the observed microstructures arise, and to elucidate the interactions between process conditions and microstructure.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Mechanical Properties of Twin Wire Arc Repair of Cast Iron Components

et al. 2022

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Twin wire arc is a commonly used thermal spray technology for application of steel coatings to cast iron components. Hardness and adhesion strength are critical properties of such coatings, and significant research is available reporting these properties. However, the lamellar structure of the coatings and residual stresses induced during the coating process leads to significantly different behavior in bending applications than in purely tensile applications which are evaluated by the standard adhesion test. In addition, microstructural features that are controlled by certain process parameters during deposition of the coating can have a significant effect on these properties. This work relates the hardness, adhesion strength, and wear resistance to the coating microstructure and assesses the related bending strength and failure mode. Comparisons between bend tests and pull-off adhesion tests show significant differences to consider when designing a twin wire arc coating.

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Mechanical Properties of High Carbon Steel Coatings on Gray Cast Iron Formed by Twin Wire ARC

DePalma,

Walluk,

Martin

2024

Technology Innovation for the Circular Economy

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The Effect of Compressed Air Pressure and Stand-off Distance on the Twin Wire Arc Spray (TWAS) Coating for Pump Impeller from AISI 304 Stainless Steel

Cited by 9 publications

References 23 publications

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

Investigation of Mechanical Properties of Twin Wire Arc Repair of Cast Iron Components

Mechanical Properties of High Carbon Steel Coatings on Gray Cast Iron Formed by Twin Wire ARC

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